I am in the process of remodeling the whole rear diff. Quaife unit and all new bearings and seals. I will have a professional shop install and calibrate all of the preloads, tooth contact patterrn, check run out ... etc.. exactly per Nissan specs. It's not cheap but worth the investment because I don't ever want to have any issues at all relating to the diff installation. If that is out of the way, then I can compare directly how the Quaife performs comparing to the factory VLSD unit from both performance and comfort point of view,
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